5/7 = n / 350....5 nickels to 7 dimes = n nickels to 350 dimes this is a proportion so we cross multiply (7)(n) = (5)(350) 7n = 1750 n = 1750/7 n = 250....so there are 250 nickels
She loses 6 points and gained 4 more because It is like 2 - 6 + 4. Then it was 2 - 6 and that will equal -4. Lastly, its was -4 + 4 from gaining more points and that will equal 0.
